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Evaluation of triticale bran as raw material for bioethanol production

机译：小黑麦麸作为生物乙醇生产原料的评价

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摘要

The present work addresses the introduction of second generation biofuels from agricultural by-products generated from low input cereal crops such as triticale. The main purpose was to investigate whether the overall ethanol yield in a triticale dry-mill ethanol plant could be increased by combination of pretreat-ment and enzymatic hydrolysis of the bran obtained by fractionation of the grain to separate from starch. Different dilute acid pretreatment conditions were studied using starch-free triticale bran (SFTB) as sub strate at a fixed loading of 10% (dry weight/volμme). A statistically experimental design approach, based on previous studies, was used to evaluate the sugar recovery so as to maximize the enzyme digestibility of the pretreated material. The highest overall sugar yield was attained by using 0.1% (w/v) of sulphuric acid at 160 ℃ for 22.5 min. At these conditions, it could be possible to obtain up to 245 L of ethanol per dry ton of SFTB considering hexose and pentose sugars fermentation, which would increase by 14% the theoretical ethanol yield in a dry-mill ethanol plant.
机译：本工作着重介绍了从低投入谷物作物（例如黑小麦）产生的农业副产品中引入第二代生物燃料的方法。主要目的是研究通过将谷物分级分离与淀粉分离而获得的麸皮的预处理和酶水解相结合，是否可以提高黑小麦干磨乙醇工厂中的总乙醇产量。使用无淀粉的小黑麦麸（SFTB）作为底物，以10％（干重/体积μme）的固定负载研究了不同的稀酸预处理条件。基于先前研究的统计实验设计方法用于评估糖的回收率，从而使预处理后的材料的酶消化率最大化。在160℃下使用0.1％（w / v）的硫酸22.5分钟可获得最高的总糖产量。在这些条件下，考虑到己糖和戊糖发酵，每干吨SFTB最多可获取245 L乙醇，这将使干磨乙醇工厂的理论乙醇收率提高14％。

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  • 来源
    《Fuel》 |2011年第4期|p.1638-1644|共7页
  • 作者

    Maria Garcia-Aparicio; Kim Trollope; Luvuyo Tyhoda; Danie Diedericks; Johann Gorgens;

  • 作者单位

    Department of Process Engineering, Stellenbosch University, Private Bag X1, Stellenbosch 7602, South Africa;

    Department of Process Engineering, Stellenbosch University, Private Bag X1, Stellenbosch 7602, South Africa;

    Department of Forest and Wood Science, Stellenbosch University, Private Bag X1, Stellenbosch 7602, South Africa;

    Department of Process Engineering, Stellenbosch University, Private Bag X1, Stellenbosch 7602, South Africa;

    Department of Process Engineering, Stellenbosch University, Private Bag X1, Stellenbosch 7602, South Africa;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    cereal bran; starch; pretreatment; enzymatic hydrolysis; bioethanol;

    机译：麦麸淀粉;预处理酶促水解;生物乙醇;

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